Silent heat dissipation device

Details Silent heat dissipation device Silent heat dissipation device

2011-05-10

2011-05-10

Ni, Suhan (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S124000

Reexamination Certificate

active

07940951

ABSTRACT:
A heat dissipation device includes a hollow housing and a speaker. The hollow housing has a first opening and a second opening. The speaker is disposed at the first opening, wherein the speaker includes a diaphragm oscillating within a frequency scope the human ear cannot or hardly hear so as to generate airflow through the second opening.

REFERENCES:
patent: 6079515 (2000-06-01), Newman
patent: 6259798 (2001-07-01), Perkins et al.
patent: 7039212 (2006-05-01), Poling et al.
patent: 2005-136250 (2005-05-01), None

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